Question

alternate exterior
corresponding
vertical
alternate interior
what kind of relationship is between 1 & 12?

Explanation:

Step1: Recall definitions

Alternate exterior angles are non - adjacent angles on opposite sides of the transversal and outside the two lines. Corresponding angles are in the same relative position. Vertical angles are opposite angles formed by two intersecting lines. Alternate interior angles are non - adjacent angles on opposite sides of the transversal and inside the two lines.

Step2: Analyze the position of ∠1 and ∠12

∠1 and ∠12 are non - adjacent, on opposite sides of the transversal, and outside the two lines (assuming the relevant lines in the diagram).

Answer:

Alternate Exterior